# If A alone can do a job in 40 days then, in how many days can B alo

| If A alone can do a job in 40 days then, in how many days can B alone do the job if together they can do the job in 8 days?

A. 15

B. 10

C. 20

D. 25

### Right Answer is: B

#### SOLUTION

B one day eff. = 5 – 1 = 4 unit

B alone complete the work = 40/4 = 10 .

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If A alone can do a job in 40 days then, in how many days can B alo